<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <h1>音乐搜索</h1>
    <div>
        <input type='text' class='input'>
        <button class="btn">搜索</button>
        <ul class="song-list"></ul>
    </div>
    <script src="level1.js"></script>
</body>
</html>